HP Manager Software manual Defining a Mobility Domain

Defining a Mobility Domain 91

„The client uses the same authorization parameters for the new session as for the old session. For example, changing the Encryption-Type or VLAN-Name parameter might cause a new session to be recorded, rather than a roam within the same session.

A disassociated session has a grace period of 5 seconds in which the session history can be retrieved and forwarded. After 5 seconds, the session is cleared, and its accounting is stopped. You cannot configure the grace period.

If the client MAC address in a Mobility Domain is not found in 5 seconds, the session is considered new.

The 802.1X reauthentication timeout has little impact on roaming. If the timeout lapses, 802.1X processing is performed on the existing association. Accounting and roaming history are not affected if the reauthentication is successful, because the client is still associated with the same MAP. If reauthentication fails, the session is cleared, and it is not eligible for roaming. If the client associates to the same MAP, that is recorded as a new session.

Roaming creates the following effects:

„Remote Authentication Dial-In User Service (RADIUS) accounting is treated as a continuation of an existing session, rather than a new one.

„For tracked users, you can view roaming history in the Monitor tab. See “Using the Client Monitor Window” on page 367.

„The old session is cleared from the WX, even if the client did not explicitly disassociate from the MAP and the 802.1X reauthentication interval has not lapsed.

Traffic Ports Used by When deploying a Mobility Domain, you might attach the WX switches to a Mobility Domain subnets that have firewalls or access controls between them. Within a

Mobility Domain, the WX switches exchange information and other types of traffic, depending on your configuration of AAA and various management services.

Table 13 provides a summary of the traffic ports typically used by a

Mobility Domain and its associated AAA and management functions.